Getting Started with IBM Data Studio for DB2

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232 Getting Started with IBM Data Studio for DB2 7.5 Opening Visual Explain from the SQL editor If you are developing SQL statements and quickly want to see a visualization of the access plan, you can start Visual Explain directly from the SQL editor. 1. From the SQL editor, right-click the query and select Open Visual Explain. 2. Specify how data should be collected. An example of this window is shown in Figure 7.22. You should indicate the statement delimiter and whether to retain the explain information on the data server (that is, store the data in the explain tables). Figure 7.22 – Specifying how data is collected
Chapter 7 – Tuning queries 233 3. Optionally, click Next to change the default special registers that are used by the optimizer to generate the access plan, as shown in Figure 7.23. These include the CURRENT SCHEMA and QUERY OPTIMIZATION LEVEL. If you do not specify a value for a special register, the default value is used. Click Finish to run Visual Explain. Figure 7.23 – Setting default values for special registers
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3 Notices This information was deve
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Table of contents 5 Table of conten
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3.3.1 Exporting data...............
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Chapter 7 - Tuning queries ........
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11.4 Community and resources ......
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Preface 13 Keeping your skills curr
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around the world have participated
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17 About the authors Dimple Bhatia
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Contributors 19 The following peopl
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21 Acknowledgements The authors owe
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24 Getting Started with IBM Data St
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100 Getting Started with IBM Data S
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103 Chapter 3 - Maintaining the dat
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Chapter 3 - Maintaining the databas
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Figure 3.35 - Selecting additional
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159 Chapter 5 - Creating SQL and XQ
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Chapter 5 - Creating SQL and XQuery
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355 Appendix D - The Sample Outdoor
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Appendix D - The Sample Outdoor Com
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Appendix E - Advanced topics for de
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E.5.4 Data web services artifacts A
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References 391 References [1] HAYES
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References 393 Books and articles 1
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396 Getting started with IBM Data S
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